<span>If I were attempting to date a rock sample that I suspect to be incredibly old, i would use radioactive isotopes with a long half life. When dating rocks and fossils to discover approximately how old they are, radioisotope dating is used on igneous rocks found near fossils. Things like Uranium 235, which is an unstable radioactive isotope of elements, decays at a constant rate over time so can be useful in determining age.</span>
Answer:
In 2011 an estimated 1.65% of the US workforce was employed/working in the Agriculture-related sector of the economy
Explanation:
Agriculture has been a major source of jobs for most countries especially with developing/underdeveloped countries ranking in the highest percentage of their country's population working in this sector, while developed countries like the US have smaller percentage of the population working agriculture-related jobs. as of 2011 chad had an estimated 86.67% of their population involved with Agriculture-related jobs
It's when you use something so much that it loses it's value or purpose. But it can also mean making a piece of land more profitable and productive.
<span>When the lid for a vat
of wine is slightly open, the yeast inside can continue to perform alcoholic
fermentation because the carbon dioxide produced by the yeast during
fermentation will act as a blanket over the wine. Nevertheless, the air around the fermenter
must be still and enough carbon dioxide should be produced to continue
alcoholic fermentation. However, at some point, carbon dioxide will fall and
can no longer protect the wine. This is the right time to get your wine covered
before it will be vulnerable to undesirable microorganisms. </span>
Therefore, open fermentation
is good in the early stages of fermentation because yeast need oxygen to synthesize sterols and assimilate
fatty acids to ensure the nutrients it needs to multiply and ferment the 70% of the sugar from the fruit. Furthermore,
the yeast is responsible in decomposing sugar from the grapes into alcohol and
carbon dioxide.